Boost Bar (In-Run Upgrades)
The leaf-funded upgrades you buy DURING a run — temporary power that resets each run.
The boost bar sits at the bottom of the screen during a run. You spend Leaves on temporary upgrades that power you up for THIS run only — they reset when the run ends. It is your main moment-to-moment progression and, early on, your only combat agency (even Auto Shoot starts here).
How it works
- Bought with Leaves, which drop from kills and waves and reset every run.
- Each upgrade has its own leaf cost that climbs with every level you buy.
- Levels are wiped when the run ends — next run you start over.
- It upgrades the same stats as the Workshop, but only for the current run.
Boost levels stack ON TOP of your permanent Workshop level along the same curve — so investing in the Workshop also makes every in-run boost start higher and hit harder.
Boost-bar upgrades & cost growth
| Item | First level | Cost growth |
|---|---|---|
| Fire Rate | 3 | ×1.72 |
| Bullet Damage | 3 | ×1.72 |
| Melee Strike | 3 | ×1.72 |
| Projectile Pierce | 3 | ×1.72 |
| Melee Speed | 3 | ×1.72 |
| Max HP | 3 | ×1.72 |
| HP Regen | 3 | ×1.72 |
| Shield | 3 | ×1.72 |
| Armor | 3 | ×1.72 |
| Shield Regen | 3 | ×1.72 |
| Shield Reflect | 3 | ×1.72 |
| Stun Dodge | 15 | ×1.8 |
| Stun Recovery | 15 | ×1.8 |
| Poison Resist | 25 | ×1.9 |
| Drain Resist | 25 | ×1.9 |
| Counter Attack | 15 | ×1.8 |
| Counter Damage | 15 | ×1.8 |
| Critical Chance | 10 | ×1.6 |
| Critical Damage | 12 | ×1.7 |
| Bleed | 15 | ×1.8 |
| Damage Reduction | 3 | ×1.72 |
| Coin Rush | 15 | ×1.8 |
| Leaf Rush | 3 | ×1.72 |
Spend Leaves greedily — they are lost on death anyway. Dump them into damage and survival right before a boss wall; leftover Leaves at the cap feed the Leaf Furnace.
Last updated 2026-07-15